From patchwork Tue Aug 21 17:18:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 960603 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=crapouillou.net Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=crapouillou.net header.i=@crapouillou.net header.b="K862FE2Y"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41vy7s1kD5z9s3x for ; Wed, 22 Aug 2018 03:18:49 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726802AbeHUUjm (ORCPT ); Tue, 21 Aug 2018 16:39:42 -0400 Received: from outils.crapouillou.net ([89.234.176.41]:38980 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726715AbeHUUjm (ORCPT ); Tue, 21 Aug 2018 16:39:42 -0400 From: Paul Cercueil To: Thomas Gleixner , Daniel Lezcano , Rob Herring , Thierry Reding , Mark Rutland , Ralf Baechle , Paul Burton , Jonathan Corbet Cc: od@zcrc.me, Mathieu Malaterre , linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@linux-mips.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v7 21/24] MIPS: qi_lb60: Reduce system timer and clocksource to 750 kHz Date: Tue, 21 Aug 2018 19:18:34 +0200 Message-Id: <20180821171834.22995-1-paul@crapouillou.net> In-Reply-To: <20180821171635.22740-1-paul@crapouillou.net> References: <20180821171635.22740-1-paul@crapouillou.net> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1534871919; bh=l7GCE4NGarN8V5qbHWr7E7L8pP76QhZujNSFQmSIfIM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=K862FE2Y6PmbSNZ/1r/qTyn2iV9oiLDN2TOjvVjj/iZa3lSVZF18xTzCpf0j8WI4Zge8aBmyOjNwW8P6QWp8jOgik77j+B0f6ssIkGX4xVaVe7629tG3PMNDIdwnWd0mQh+wWP27iWv8kf8Hs0bkxg0WqjiqgY+036AhC+5liiU= Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org The default clock (12 MHz) is too fast for the system timer, which fails to report time accurately. Signed-off-by: Paul Cercueil --- Notes: v5: New patch v6: Remove ingenic,clocksource-channel property v7: No change arch/mips/boot/dts/ingenic/qi_lb60.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/boot/dts/ingenic/qi_lb60.dts b/arch/mips/boot/dts/ingenic/qi_lb60.dts index 85529a142409..de9d45e2c24a 100644 --- a/arch/mips/boot/dts/ingenic/qi_lb60.dts +++ b/arch/mips/boot/dts/ingenic/qi_lb60.dts @@ -45,3 +45,9 @@ bias-disable; }; }; + +&tcu { + /* 750 kHz for the system timer and clocksource */ + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>; + assigned-clock-rates = <750000>, <750000>; +};